CN112237044A - Resource mapping method, device, equipment and readable storage medium - Google Patents
Resource mapping method, device, equipment and readable storage medium Download PDFInfo
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- CN112237044A CN112237044A CN202080002386.3A CN202080002386A CN112237044A CN 112237044 A CN112237044 A CN 112237044A CN 202080002386 A CN202080002386 A CN 202080002386A CN 112237044 A CN112237044 A CN 112237044A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
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- H04L25/0224—Channel estimation using sounding signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
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Abstract
The disclosure provides a resource mapping method, a device, equipment and a readable storage medium, and relates to the field of communication. The method comprises the following steps: receiving a first configuration signaling, wherein the first configuration signaling comprises a first information field, and the first information field is used for indicating the first terminal to expand the service channel resource mapping; the resource mapping is extended according to the first configuration signaling. And expanding the resource mapping of the service channel to the first terminal through the first configuration signaling, so that the first terminal can perform resource mapping in an expansion mapping mode and perform data transmission at the position of the RE which cannot be occupied, thereby reducing the code rate, improving the reliability of data transmission and improving the coverage capability of the base station.
Description
Technical Field
The present disclosure relates to the field of communications, and in particular, to a resource mapping method, apparatus, device, and readable storage medium.
Background
In a New Radio (NR) system, a channel estimation value is obtained by designing a Demodulation Reference Signal (DMRS) auxiliary system, where the DMRS is also used for related Demodulation of an uplink control channel and an uplink data channel.
In the related art, User Equipment (UE) performs resource mapping according to a DMRS, thereby implementing data communication.
However, for the UE at the coverage edge, there are occupied resources that cannot be mapped, thereby affecting coding efficiency and reducing communication performance.
Disclosure of Invention
The embodiment of the disclosure provides a Resource mapping method, a Resource mapping device, a Resource Element (RE) which cannot be occupied, and a readable storage medium, which can be used for data transmission to improve coverage. The technical scheme is as follows:
in one aspect, a resource mapping method is provided, which is applied to a first terminal, and the method includes:
receiving a first configuration signaling, where the first configuration signaling includes a first information field, and the first information field is used to indicate that the first terminal expands service channel resource mapping;
and expanding resource mapping according to the first configuration signaling.
In another aspect, a resource mapping method is provided, which is applied to an access network device, and the method includes:
sending a first configuration signaling to a first terminal, where the first configuration signaling includes a first information field, and the first information field is used to indicate that the first terminal expands resource mapping.
In another aspect, a resource mapping method is provided, which is applied to a second terminal, and the method includes:
receiving a second configuration signaling, where the second configuration signaling includes a fourth information field, and the fourth information field is used to instruct the second terminal to adjust the traffic channel resource mapping;
and adjusting resource mapping according to the second configuration signaling.
In another aspect, an apparatus for resource mapping is provided, where the apparatus is applied to a first terminal, and the apparatus includes:
a receiving module, configured to receive a first configuration signaling, where the first configuration signaling includes a first information field, and the first information field is used to indicate that the first terminal expands a service channel resource mapping;
and the processing module is used for expanding resource mapping according to the first configuration signaling.
In another aspect, a resource mapping apparatus is provided, which is applied to an access network device, and the apparatus includes:
a sending module, configured to send a first configuration signaling to a first terminal, where the first configuration signaling includes a first information field, and the first information field is used to indicate that the first terminal expands resource mapping.
In another aspect, an apparatus for resource mapping is provided, where the apparatus is applied to a second terminal, and the apparatus includes:
a receiving module, configured to receive a second configuration signaling, where the second configuration signaling includes a fourth information field, and the fourth information field is used to instruct the second terminal to adjust a service channel resource mapping;
and the processing module is used for adjusting resource mapping according to the second configuration signaling.
In another aspect, a terminal is provided, which includes:
a processor;
a transceiver coupled to the processor;
a memory for storing executable signaling for the processor;
wherein the processor is configured to load and execute the executable instructions to implement the resource mapping method as described in the embodiments of the present disclosure.
In another aspect, an access network device is provided, which includes:
a processor;
a transceiver coupled to the processor;
a memory for storing executable signaling for the processor;
wherein the processor is configured to load and execute the executable instructions to implement the resource mapping method as described in the embodiments of the present disclosure.
In another aspect, a computer-readable storage medium is provided, in which at least one instruction, at least one program, code set, or instruction set is stored, and the at least one instruction, the at least one program, the code set, or the instruction set is loaded and executed by a processor to implement the resource mapping method according to the embodiment of the present disclosure.
In another aspect, a computer program product is provided that includes computer instructions stored in a computer readable storage medium. The processor of the computer device reads the computer instructions from the computer readable storage medium, and the processor executes the computer instructions to cause the computer device to execute the resource mapping method described in any of the above embodiments.
The beneficial effects brought by the technical scheme provided by the embodiment of the disclosure at least comprise:
and expanding the resource mapping of the service channel to the first terminal through the first configuration signaling, so that the first terminal can perform resource mapping in an expansion mapping mode and perform data transmission at the position of the RE which cannot be occupied, thereby reducing the code rate, improving the reliability of data transmission and improving the coverage capability of the base station.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a block diagram of a communication system provided by an exemplary embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of type1 DMRS provided in an exemplary embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of type2 DMRS provided by an exemplary embodiment of the present disclosure;
FIG. 4 is a flowchart of a resource mapping method provided by an exemplary embodiment of the present disclosure;
FIG. 5 is a flowchart of a resource mapping method provided by another exemplary embodiment of the present disclosure;
fig. 6 is a block diagram of a resource mapping apparatus according to an exemplary embodiment of the present disclosure;
fig. 7 is a block diagram of a resource mapping apparatus according to another exemplary embodiment of the present disclosure;
fig. 8 is a block diagram of a resource mapping apparatus according to another exemplary embodiment of the present disclosure;
fig. 9 is a block diagram of a terminal according to an exemplary embodiment of the present disclosure;
fig. 10 is a block diagram of a network device according to an exemplary embodiment of the present disclosure.
Detailed Description
To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.
Fig. 1 shows a block diagram of a communication system provided by an exemplary embodiment of the present disclosure, which may include: an access network 12 and a terminal 13.
Several access network devices 120 are included in access network 12. The access network equipment 120 may be a base station, which is a device deployed in an access network to provide wireless communication functions for terminals. The base stations may include various forms of macro base stations, micro base stations, relay stations, access points, and the like. In systems using different radio access technologies, names of devices having a base station function may be different, for example, in a Long Term Evolution (LTE) system, the device is called eNodeB or eNB; in a 5G New Radio (NR) system, it is called a gbnodeb or a gNB. The name "base station" may describe, and may vary as communication technology evolves. For convenience, in the embodiments of the present disclosure, the above-mentioned device for providing a wireless communication function for a terminal is collectively referred to as an access network device.
The terminal 13 may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem having wireless communication functions, as well as various forms of terminals (UE), Mobile Stations (MS), terminal (terminal device), and the like. For convenience of description, the above-mentioned devices are collectively referred to as a terminal. The access network device 120 and the terminal 13 communicate with each other through some air interface technology, for example, a Uu interface.
In the embodiment of the present disclosure, the terminal 13 includes: vehicle 131, other vehicles 132, infrastructure 133, and pedestrian 134.
Vehicle-to-Vehicle (V2V) refers to communication between the Vehicle 131 and another Vehicle 132, and the Vehicle transmits the own Vehicle's own related information including the traveling speed, geographical position, traveling direction, traveling state, and the like to the other Vehicle.
Vehicle to Infrastructure (V2I) refers to communication between the Vehicle 131 and the Infrastructure 133, and the Infrastructure 133 includes all the Infrastructure encountered during the travel of the Vehicle, including building facilities such as traffic lights, bus stations, buildings, and tunnels.
Vehicle to Pedestrian (V2P) refers to communication between the Vehicle 131 and the Pedestrian 134. Pedestrian (Pedestrian) generally refers to electronic devices with mobile communication capability carried by pedestrians, such as mobile phones and wearable devices, wherein the wearable devices include smart bracelets, smart watches, smart rings and the like.
In the embodiment of the present disclosure, the vehicle 131 is referred to as a first terminal, and the other vehicle 132, the infrastructure 133, and the pedestrian 134 are referred to as a second terminal for illustration, but the roles of the two may be interchanged, and the present disclosure is not limited thereto.
Optionally, the first terminal and the second terminal are terminals supporting direct connection communication, and the communication system may be an NR system or a subsequent evolution system.
In the NR system, since the operating frequency of the NR system is high, such as: the FR2 frequency range is 28GHz or 39GHz, however, with higher operating frequencies, wireless channels are inevitably subject to higher path loss, thereby creating greater challenges to the coverage quality and service quality of the cell.
In the process of evaluating the coverage conditions of different channels, a transmitting end generally transmits data while interposing a pilot sequence therein, so that a receiving end determines the channel condition according to the received pilot sequence and a known transmission sequence, and further determines the channel condition of a system or a data part, and thus can obtain the transmitted data content. When channel estimation is performed according to the pilot sequence, the received pilot sequence is divided by the known sending sequence to obtain a channel estimation value H, and channel estimation is performed through the channel estimation value H.
In the NR system, a Demodulation Reference Signal (DMRS) auxiliary system is designed to obtain a channel estimation value, and the DMRS is also used for related Demodulation of an uplink control channel and an uplink data channel. Alternatively,
in current NR systems, two DMRS types are supported, type1 DMRS and type2 DMRS, where each type of DMRS in turn comprises a single symbol DMRS (comprising 1 OFDM symbol) or a dual symbol DMRS (comprising 2 OFDM symbols), where the DMRS types are configured by higher layer signaling. Optionally, the UE determines the mapping of the DMRS to the physical resource according to a higher layer configuration parameter, DMRS-Type. Optionally, the DMRS sequence mapping formula is mapped onto a Resource Element (RE).
RE, i.e., resource element, or resource element, is the smallest resource unit in LTE physical resources; occupying 1 OFDM symbol (1/14ms) in the time domain and 1 subcarrier (15KHz) in the frequency domain. The symbols, which are commonly known as modulated data symbols, are mapped to REs, and are two different concepts from OFDM symbols.
The two DMRS types are described, wherein the multiplexing and arrangement of the type1 DMRS and the type2 DMRS are as follows:
type1 DMRS: referring to fig. 2, for a single symbol DMRS201, subcarriers within one OFDM symbol are divided into two groups of frequency-divided comb resources, where each group of comb resources constitutes one Code Division Multiplexing (CDM) group. Inside the CDM group, two-port multiplexing is supported by 2 Orthogonal Cover Codes (OCCs), and at most 4 ports are supported. The double-symbol DMRS202 adds a time domain OCC on the basis of a single symbol structure, each group of comb resources occupies two continuous OFDM symbols, and each CDM group realizes four orthogonal ports through 4 OCCs in time-frequency domain, so that at most 8 orthogonal ports are supported.
type2 DMRS: schematically, referring to fig. 3, for a single-symbol DMRS301, subcarriers within one OFDM symbol are divided into 3 CDM groups, each CDM group is formed of two pairs of adjacent subcarriers, 2-port Multiplexing is supported by 2 OCCs within a CDM group, and Frequency Division Multiplexing (FDM) is supported between groups, thus supporting 6 ports at most; the dual-symbol DMRS302 adds a Time Domain-Orthogonal Cover Code (TD-OCC) to a single-symbol DMR301 structure, where each CDM group occupies two consecutive OFDM ports, and a maximum of 3 CDM groups supports 12 ports.
That is, two ports use different orthogonal cover codes on two adjacent symbols on the same subcarrier, for example, the codeword corresponding to port 0 is {1, 1}, and the codeword corresponding to port 1 is {1, -1}, so that when two ports transmit simultaneously, since the channel gains on two adjacent symbols on the same subcarrier on any one port can be considered to be the same, the receiving end can separate the channels superimposed on the ports by using the corresponding orthogonal codewords.
For a Physical Uplink Shared Channel (PUSCH), only the configuration of type1 DMRS is supported.
In the conventional NR system, Downlink Control Information (DCI) includes a set of available ports for PUSCH and a number of CDM groups that are not used for data transmission on scheduling resources thereof. If there are other CDM groups not used for data transmission besides the CDM group corresponding to the antenna port allocated to the first UE, the antenna ports in the CDM group not used for data transmission may belong to other scheduled second UEs, and the data of the first UE is not mapped to the REs occupied by these CDM groups.
Based on the above situation, when there are resources that cannot be mapped, the UE at the coverage edge has a large impact on the coding efficiency and performance of the UE.
In view of the above situation, an embodiment of the present disclosure provides a method for mapping uplink traffic channel resources in coverage enhancement, and fig. 4 is a flowchart of the resource mapping method provided in an exemplary embodiment of the present disclosure, taking application of the method in a first terminal as an example, as shown in fig. 4, the method includes:
The first configuration signaling includes at least one of Radio Resource Control (RRC) signaling, Media Access Control (MAC CE) Element, or physical layer signaling.
The first configuration signaling is used to instruct the first terminal to extend the traffic channel resource mapping in the extended mapping pattern.
Optionally, taking an example that the access network device in the embodiment of the present disclosure is implemented as a base station, the first terminal is a terminal at a coverage edge of the base station. Firstly, the base station determines whether the UE is a terminal at the coverage edge of the base station according to the parameters of the UE, such as signal quality, transmission power, channel ratio and the like. That is, when the UE transmits data to the base station in an uplink manner, the base station acquires parameters of the UE, such as signal quality, transmission power, and channel ratio, and determines that the UE is a terminal on the coverage edge of the base station in response to the signal quality being lower than the quality threshold, the transmission power being greater than the power threshold, or the channel ratio being within the required channel ratio range.
For a UE (i.e. the first terminal in this embodiment) whose base station covers the edge, when there is a terminal and the UE frequency division multiplexing DMRS symbol, there is a resource that cannot be mapped, which affects coding efficiency and reduces communication performance. Thereby affecting the coverage capability of the base station. Therefore, in the embodiment of the present disclosure, a base station sends a first configuration instruction to a first terminal at a coverage edge, where a first information field in the first configuration instruction is used to indicate the first terminal to perform resource mapping, and optionally, the first information field indicates, for example, through 1 or more bits, the first terminal to perform resource mapping (optionally, performing resource mapping in a preconfigured or predefined extended mapping pattern, for example, the extended mapping pattern is predefined and/or stored in the first terminal); or, the first information field only indicates the extended mapping pattern, and as long as the terminal receives the extended mapping pattern, it is equivalent to indicating the first terminal to extend the service channel resource mapping in the extended mapping pattern indicated by the first information field; or, the first configuration signaling includes a second information field, and the first information field is used to instruct the first terminal to expand the traffic channel resource mapping in the expansion mapping manner indicated by the second information field.
That is, in this embodiment, the base station notifies the coverage edge UE, and allows the coverage edge UE to expand data mapping, and/or expand an expansion mapping mode (pattern) of mapping.
Optionally, the base station simultaneously notifies other terminals that multiplex the DMRS symbols with the first terminal in the frequency division multiplexing manner, and in the DMRS symbols in which the first terminal (edge UE) performs resource mapping using the extended mapping pattern, mapping is not performed in the REs in which the DMRS is initially mapped.
That is, the first terminal and the second terminal frequency-division multiplex the DMRS symbol, the first terminal occupies a first resource element position in the DMRS symbol, and the second terminal occupies a second resource element position in the DMRS symbol, so that the base station sends a second configuration signaling to the second terminal, where the second configuration signaling is used to instruct the second terminal to cancel resource mapping at the second resource element position. Therefore, when performing resource mapping, the first terminal can perform resource mapping at the first resource element position and the second resource element position by using all or part of the resource element positions.
And the first terminal carries out extended resource mapping by an extended mapping pattern (pattern) according to the first configuration signaling.
Optionally, the first terminal is further configured to perform data rate matching in the extended mapping pattern.
That is, after receiving the first configuration instruction, the first terminal performs rate matching and resource mapping according to the extended mapping pattern when performing the rate matching operation and the resource mapping operation.
Optionally, the extended mapping pattern is pre-configured; or, extending the mapping pattern to be predefined; or, the extended mapping pattern is determined according to the first configuration signaling.
And in response to that the extended mapping pattern is pre-configured, namely the base station sends configuration signaling to the UE in advance, wherein the configuration signaling comprises configuration information of the extended mapping pattern, when the UE receives the first configuration signaling, the extended mapping pattern is determined according to the configuration information of the extended mapping pattern, and resource mapping is carried out according to the extended mapping pattern.
And in response to the extended mapping pattern being predefined, i.e. the extended mapping pattern is predefined in the communication protocol, performing resource mapping according to the extended mapping pattern when the UE receives the first configuration signaling.
Responding to the extended mapping pattern determined according to the first configuration signaling, and then any one of the following cases is included: 1. the first configuration signaling includes a second information field, where the second information field is used to indicate an extended mapping pattern, such as: the second information field includes number information of the extended position. 2. The first information field is further configured to indicate an extended mapping pattern, and illustratively, when the first information field takes a first value, the first information field corresponds to the first extended mapping pattern, for example: a number corresponding to the first extended position; when the first information field takes the second value, the second information field corresponds to the second extended mapping style, for example: corresponding to the number of the second extended position.
Optionally, the first terminal spreads the resource mapping in the designated slot or symbol according to the first configuration instruction.
Wherein the designated slot or symbol is pre-configured, or the designated slot or symbol is predefined, or the designated slot or symbol is determined according to the first configuration signaling.
Responding that the designated slot or symbol is pre-configured, that is, the base station sends a configuration signaling to the first terminal, and the configuration signaling configures, to the first terminal, the number of the slot or symbol corresponding to the extended mapping pattern after receiving the first configuration instruction, that is, after receiving the first configuration signaling, the slot or symbol in the number is the designated slot or symbol; or, the base station sends a configuration signaling to the first terminal, and the configuration signaling configures, to the first terminal, the slot or symbol arrangement corresponding to the extended mapping pattern after receiving the first configuration instruction, that is, after receiving the first configuration signaling, the slot or symbol in the arrangement scheme is the designated slot or symbol.
And responding to the fact that the designated slot or symbol is predefined, namely, a determining mode of the designated slot or symbol is predefined in the protocol after the UE receives the first configuration instruction, and after the UE receives the first configuration instruction, expanding the resource mapping according to the designated slot or symbol predefined by the protocol.
And in response to the designated slot or symbol being determined according to the first configuration instruction, including a third information field in the first configuration instruction, where the third information field is used to indicate the designated slot or symbol. And the UE determines the expansion of the service channel resource mapping according to the first information field in receiving the first configuration instruction, and determines the time slot range of the service channel resource mapping according to the third information field.
Illustratively, the third information field is used to indicate that the first terminal performs expansion of service channel resource mapping on subsequent N slots, and after receiving the first configuration signaling, the first terminal performs resource mapping in an expansion mapping pattern on the subsequent N slots, where N is a positive integer.
Illustratively, the DMRS mapping type involved in the embodiments of the present disclosure is type1, the first terminal located at the coverage edge of the base station is UE1, and the second terminal frequency-division multiplexing DMRS symbol with UE1 is UE2, that is, UE1 and UE2 frequency-division multiplexing DMRS symbol. One Resource data Block (RB) includes 12 subcarriers in a frequency domain, 1 slot (including 14 symbols) in a time domain, and when REs are mapped to subcarriers in the frequency domain, reference signals REs occupied by the UE1 are numbered as 0, 2, 4, 6, 8, and 10; the reference signals RE occupied by the UE2 are numbered 1, 3, 5, 7, 9, 11.
Initially, the UE1 maps only on the occupied reference signal REs, that is, only on the RE positions of 0, 2, 4, 6, 8, and 10, and the RE positions 1, 3, 5, 7, 9, and 11 are empty and occupied by the RE2, when the base station sends the first configuration signaling to the UE1, that is, the UE1 is instructed to perform resource mapping in the extended mapping pattern, the UE extends the mapping of the reference signal REs and allows the reference signal REs occupying the UE2 on the other subsequent N slots to perform extended data mapping. Then, when calculating the physical resources that can be carried, the UE maps the data to the corresponding locations, considering the reference signal RE locations of the UE1 and the UE 2.
When the base station sends the first configuration signaling to the UE1, the base station sends second configuration signaling to the UE2, where the second configuration signaling is used to instruct the UE2 to cancel resource mapping on the initial reference signal RE position. The UE2 stops resource mapping at the RE positions numbered 1, 3, 5, 7, 9, 11 after receiving the second configuration signaling.
It should be noted that, in the above embodiments, the DMRS symbols are frequency-division multiplexed by two terminals, namely, UE1 and UE2, in some embodiments, there may be more terminals frequency-division multiplexed with the DMRS symbols by UE1, and this is not limited in the embodiments of the present disclosure.
To sum up, the resource mapping method provided in the embodiment of the present disclosure expands the resource mapping of the service channel to the first terminal through the first configuration signaling, so that the first terminal can perform resource mapping in an expansion mapping pattern, and perform data transmission at an unoccupied RE position, thereby reducing a code rate, improving reliability of data transmission, and improving coverage capability of the base station.
In an optional embodiment, the access network device sends the first configuration signaling to the first terminal and sends the second configuration signaling to the second terminal, and the first terminal and the second terminal are two terminals that frequency-division multiplex DMRS symbols.
Fig. 5 is a flowchart of a resource mapping method according to another exemplary embodiment of the present disclosure, which is described by taking as an example that the method is applied to a communication system in which an access network device, a first terminal, and a second terminal are located, and as shown in fig. 5, the method includes:
step 501, an access network device sends a first configuration signaling to a first terminal.
The first configuration signaling comprises a first information field, and the first information field is used for indicating the first terminal to expand the mapping of the service channel resources.
Optionally, the first terminal is located at a coverage edge of the base station, and the base station determines whether the UE is a terminal at the coverage edge of the base station according to parameters of the UE, such as signal quality, transmission power, and channel ratio.
For a UE (i.e. a first terminal in this embodiment) whose base station covers an edge, when there is a terminal and the UE frequency division multiplexing DMRS symbol, there is a resource that cannot be mapped, thereby affecting coding efficiency and reducing communication performance. Thereby affecting the coverage capability of the base station. Therefore, in the embodiment of the present disclosure, a base station sends a first configuration instruction to a first terminal at a coverage edge, where a first information field in the first configuration instruction is used to instruct the first terminal to expand traffic channel resource mapping in an expansion mapping pattern.
In this embodiment, a case where the first terminal and the second terminal frequency division multiplex DMRS symbols is taken as an example will be described. The first terminal occupies a first resource element position in the symbol, and the second terminal occupies a second resource element position in the symbol, wherein the symbol is used for indicating the DMRS symbol.
Schematically, reference signals RE occupied by the first terminal are numbered 0, 2, 4, 6, 8, 10; the reference signals RE occupied by the second terminal are numbered 1, 3, 5, 7, 9, 11.
Step 502, the access network device sends a second configuration signaling to the second terminal.
The second configuration signaling is used to instruct the second terminal to adjust the traffic channel resource mapping, and optionally, the second configuration signaling is used to instruct the second terminal to cancel resource mapping at the initial reference signal RE position.
Optionally, the second configuration signaling includes a fourth information field, where the fourth information field is used to instruct the second terminal to adjust the traffic channel resource mapping, such as: resource mapping at the initial reference signal RE position is cancelled.
Wherein the RE position of the resource map cancellation is preconfigured, or the RE position of the resource map cancellation is predefined, or the RE position of the resource map cancellation is determined by the second configuration signaling.
Illustratively, the second terminal performs resource mapping on the second resource element position, and then the second configuration signaling instructs the second terminal to cancel the resource mapping on the second resource element position. Wherein the second configuration signaling indicates the second terminal to cancel the resource mapping at the complete second resource element position; or the second configuration signaling indicates the second terminal to cancel the resource mapping at the position of the partial RE in the second resource element position.
Illustratively, the reference signal RE occupied by the second terminal is numbered as 1, 3, 5, 7, 9, 11, and the second configuration signaling indicates that the second terminal cancels resource mapping at the RE position of 1, 3, 5, 7, 9, 11; or, the second configuration signaling instructs the second terminal to cancel the resource mapping on the RE positions of 1, 3, 5, 7.
In step 503, the first terminal receives the first configuration signaling.
Step 504, the first terminal expands the resource mapping according to the first configuration signaling.
And the first terminal carries out extended resource mapping in an extended mapping mode according to the first configuration signaling.
Optionally, the first terminal is further configured to perform data rate matching in the extended mapping pattern.
That is, after receiving the first configuration instruction, the first terminal performs rate matching and resource mapping according to the extended mapping pattern when performing the rate matching operation and the resource mapping operation.
Optionally, the extended mapping pattern is pre-configured; or, extending the mapping pattern to be predefined; or, the extended mapping pattern is determined according to the first configuration signaling.
And in response to that the extended mapping pattern is pre-configured, namely the base station sends configuration signaling to the UE in advance, wherein the configuration signaling comprises configuration information of the extended mapping pattern, when the UE receives the first configuration signaling, the extended mapping pattern is determined according to the configuration information of the extended mapping pattern, and resource mapping is carried out according to the extended mapping pattern.
And in response to the extended mapping pattern being predefined, i.e. the extended mapping pattern is predefined in the communication protocol, performing resource mapping according to the extended mapping pattern when the UE receives the first configuration signaling.
Responding to the extended mapping pattern determined according to the first configuration signaling, and then any one of the following cases is included: 1. the first configuration signaling includes a second information field, where the second information field is used to indicate an extended mapping pattern, such as: the second information field includes number information of the extended position. 2. The first information field is further configured to indicate an extended mapping pattern, and illustratively, when the first information field takes a first value, the first information field corresponds to the first extended mapping pattern, for example: a number corresponding to the first extended position; when the first information field takes the second value, the second information field corresponds to the second extended mapping style, for example: corresponding to the number of the second extended position.
Optionally, the first terminal spreads the resource mapping in the designated slot or symbol according to the first configuration instruction.
Wherein the designated slot or symbol is pre-configured, or the designated slot or symbol is predefined, or the designated slot or symbol is determined according to the first configuration signaling.
Optionally, the first configuration signaling includes a third information field, where the third information field is used to indicate a designated slot or symbol corresponding to the extended mapping pattern.
And 505, the second terminal receives a second configuration signaling.
Step 506, the second terminal adjusts the resource mapping according to the second configuration signaling.
Optionally, the second terminal cancels mapping on the initial reference signal RE position according to the second configuration signaling.
Optionally, the second configuration signaling is used to instruct the second terminal to cancel resource mapping on the second resource element position.
The second terminal is further configured to adjust the resource mapping within the designated slot or symbol according to the second configuration signaling. Wherein, the appointed time slot or symbol is pre-configured; or, the slot or symbol is designated as predefined; or, the slot or symbol is designated as determined according to the second configuration signaling.
Optionally, the second configuration signaling includes a fifth information field, where the fifth information field is used to indicate to cancel a designated slot or symbol corresponding to the resource mapping at the initial reference signal RE position. That is, in the designated time slot after receiving the second configuration instruction, the resource mapping at the position of the initial reference signal RE is cancelled. Optionally, the second terminal cancels the resource mapping at the initial resource signal RE position according to the second configuration signaling, performs resource mapping at other signal resource RE positions, and restores the resource mapping at the initial resource signal RE position after n slot slots or symbols are finished.
To sum up, the resource mapping method provided in the embodiment of the present disclosure expands the resource mapping of the service channel to the first terminal through the first configuration signaling, so that the first terminal can perform resource mapping in an expansion mapping pattern, and perform data transmission at an unoccupied RE position, thereby reducing a code rate, improving reliability of data transmission, and improving coverage capability of the base station.
Fig. 6 is a block diagram of a resource mapping apparatus according to an exemplary embodiment of the present disclosure, which is described by taking the apparatus as an example for being applied to a first terminal, and as shown in fig. 6, the apparatus includes:
a receiving module 610, configured to receive a first configuration signaling, where the first configuration signaling includes a first information field, and the first information field is used to indicate that the first terminal expands a service channel resource mapping;
a processing module 620, configured to expand resource mapping according to the first configuration signaling.
In an optional embodiment, the processing module 620 is further configured to perform extended resource mapping in an extended mapping pattern according to the first configuration signaling.
In an optional embodiment, the processing module 620 is further configured to perform data rate matching in the extended mapping pattern.
In an alternative embodiment, the first information field indicates the extended mapping pattern;
or the like, or, alternatively,
the first configuration signaling further includes a second information field, where the second information field is used to indicate the extended mapping pattern.
In an alternative embodiment, the extended mapping pattern is pre-configured;
or the like, or, alternatively,
the extended mapping pattern is predefined.
In an optional embodiment, the first terminal frequency division multiplexes a symbol occupied by a demodulation reference signal with a second terminal; the first terminal initially occupies a first resource element position within the symbol, and the second terminal initially occupies a second resource element position within the symbol;
the processing module 620 is further configured to perform resource mapping at the first resource element location and the second resource element location according to the first configuration signaling.
In an optional embodiment, the processing module 620 is further configured to spread resource mapping in a slot or a symbol of a designated slot according to the first configuration signaling.
In an alternative embodiment, the designated slot or symbol is pre-configured;
or the like, or, alternatively,
the designated slot or symbol is predefined;
or the like, or, alternatively,
the first configuration signaling comprises a third information field, and the third information field is used for indicating the specified slot or symbol.
To sum up, the resource mapping apparatus provided in the embodiment of the present disclosure expands the resource mapping of the service channel to the first terminal through the first configuration signaling, so that the first terminal can perform resource mapping in an expansion mapping pattern, and perform data transmission at an unoccupied RE position, thereby reducing a code rate, improving reliability of data transmission, and improving coverage capability of the base station.
Fig. 7 is a block diagram of a resource mapping apparatus according to an exemplary embodiment of the present disclosure, which is described by taking an application of the apparatus in an access network device as an example, and as shown in fig. 7, the apparatus includes:
a sending module 710, configured to send a first configuration signaling to a first terminal, where the first configuration signaling includes a first information field, and the first information field is used to indicate that the first terminal expands resource mapping.
In an alternative embodiment, the first information field is used to instruct the first terminal to extend the resource mapping in an extended mapping pattern.
In an optional embodiment, the sending module 710 is further configured to send a configuration instruction to the first terminal, where the configuration instruction includes an indication field for configuring the extended mapping pattern.
In an alternative embodiment, the first information field indicates the extended mapping pattern;
or the like, or, alternatively,
the first configuration signaling further includes a second information field, where the second information field is used to indicate the extended mapping pattern.
In an alternative embodiment, the extended mapping pattern is predefined.
In an optional embodiment, the first terminal frequency division multiplexes a symbol occupied by a demodulation reference signal with a second terminal; the first terminal initially occupies a first resource element position within the symbol, and the second terminal initially occupies a second resource element position within the symbol;
the sending module 710 is further configured to send a second configuration signaling to the second terminal, where the second configuration signaling is used to instruct the second terminal to cancel resource mapping at the second resource element position.
In an optional embodiment, the first configuration signaling includes a third information field, where the third information field is used to indicate a designated slot or symbol corresponding to the extended mapping pattern.
To sum up, the resource mapping apparatus provided in the embodiment of the present disclosure expands the resource mapping of the service channel to the first terminal through the first configuration signaling, so that the first terminal can perform resource mapping in an expansion mapping pattern, and perform data transmission at an unoccupied RE position, thereby reducing a code rate, improving reliability of data transmission, and improving coverage capability of the base station.
Fig. 8 is a schematic structural diagram of a resource mapping apparatus according to an exemplary embodiment of the present disclosure, and as shown in fig. 8, the apparatus includes:
a receiving module 810, configured to receive a second configuration signaling, where the second configuration signaling includes a fourth information field, and the fourth information field is used to instruct the second terminal to adjust a traffic channel resource mapping;
a processing module 820, configured to adjust resource mapping according to the second configuration signaling.
In an optional embodiment, the first terminal frequency division multiplexes a symbol occupied by a demodulation reference signal with the second terminal; the first terminal initially occupies a first resource element position within the symbol, and the second terminal initially occupies a second resource element position within the symbol;
the processing module 820 is further configured to cancel resource mapping at the second resource element position according to the second configuration signaling.
In an optional embodiment, the processing module 820 is further configured to adjust resource mapping in a slot or a symbol of a designated slot according to the second configuration signaling.
In an alternative embodiment, the designated slot or symbol is pre-configured;
or the like, or, alternatively,
the designated slot or symbol is predefined;
or the like, or, alternatively,
the second configuration signaling includes a fifth information field, where the fifth information field is used to indicate the slot or symbol of the designated slot.
Fig. 9 is a schematic structural diagram of a terminal according to an exemplary embodiment of the present disclosure, where the terminal includes: a processor 901, a receiver 902, a transmitter 903, a memory 904, and a bus 905.
The processor 901 includes one or more processing cores, and the processor 901 executes various functional applications and information processing by executing software programs and modules.
The receiver 902 and the transmitter 903 may be implemented as one communication component, which may be a communication chip.
The memory 904 is coupled to the processor 901 via a bus 905.
The memory 904 may be used to store at least one instruction that the processor 901 is configured to execute to implement the various steps in the above-described method embodiments.
Further, the memory 904 may be implemented by any type or combination of volatile or non-volatile storage devices, including, but not limited to: magnetic or optical disks, Electrically Erasable Programmable Read Only Memories (EEPROMs), Erasable Programmable Read Only Memories (EPROMs), Static Random-Access memories (SRAMs), Read Only Memories (ROMs), magnetic memories, flash memories, Programmable Read Only Memories (PROMs).
In an exemplary embodiment, there is also provided a non-transitory computer-readable storage medium, such as a memory, including instructions executable by a processor of a terminal to perform a method performed by a terminal side in the above-described device switching method. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
A non-transitory computer readable storage medium, wherein instructions, when executed by a processor of a terminal, enable the terminal to perform the above-described resource mapping method.
Fig. 10 is a block diagram illustrating an access network apparatus 1000 in accordance with an example embodiment. In some embodiments, the access network device 1000 is a base station.
The access network apparatus 1000 includes: a processor 1001, a receiver 1002, a transmitter 1003, and a memory 1004. The receiver 1002, the transmitter 1003, and the memory 1004 are connected to the processor 1001 through buses, respectively.
The processor 1001 includes one or more processing cores, and the processor 1001 executes a software program and a module to execute a method executed by the access network device in the device switching method provided by the embodiment of the present disclosure. The memory 1004 may be used to store software programs and modules. In particular, the memory 1004 may store an operating system 1041, and at least one application module 1042 for performing the functions. The receiver 1002 is configured to receive communication data sent by another device, and the transmitter 1003 is configured to send communication data to another device.
A non-transitory computer readable storage medium, wherein instructions, when executed by a processor of an access network device, enable the access network device to perform the above-described resource mapping method.
An exemplary embodiment of the present disclosure also provides a communication system, including: a terminal and an access network device;
the terminal comprises a resource mapping device provided by the embodiment shown in fig. 6 or fig. 8;
the access network equipment comprises the resource mapping device provided by the embodiment shown in fig. 7.
An exemplary embodiment of the present disclosure also provides a communication system, including: a terminal and an access network device;
the terminal comprises the terminal provided by the embodiment shown in fig. 9;
the network device comprises the access network device provided by the embodiment shown in fig. 10.
An exemplary embodiment of the present disclosure further provides a computer-readable storage medium, where at least one instruction, at least one program, a code set, or a set of instructions is stored in the computer-readable storage medium, and the at least one instruction, the at least one program, the code set, or the set of instructions is loaded and executed by the processor to implement the steps executed by the terminal or the access network device in the resource mapping method provided by the foregoing various method embodiments.
It should be understood that reference to "a plurality" herein means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (38)
1. A resource mapping method applied to a first terminal, the method comprising:
receiving a first configuration signaling, where the first configuration signaling includes a first information field, and the first information field is used to indicate that the first terminal expands service channel resource mapping;
and expanding resource mapping according to the first configuration signaling.
2. The method of claim 1, wherein the signaling an extended resource mapping according to the first configuration comprises:
and carrying out extended resource mapping in an extended mapping mode according to the first configuration signaling.
3. The method of claim 2,
the first information field indicates the extended mapping pattern;
or the like, or, alternatively,
the first configuration signaling further includes a second information field, where the second information field is used to indicate the extended mapping pattern.
4. The method of claim 2,
the extended mapping pattern is pre-configured;
or the like, or, alternatively,
the extended mapping pattern is predefined.
5. The method according to any of claims 1 to 4, wherein the first terminal frequency division multiplexes a symbol occupied by a demodulation reference signal with the second terminal; the first terminal initially occupies a first resource element position within the symbol, and the second terminal initially occupies a second resource element position within the symbol;
the expanding resource mapping according to the first configuration signaling comprises:
and according to the first configuration signaling, carrying out resource mapping on the first resource element position and the second resource element position.
6. The method according to any of claims 1 to 4, wherein said signaling an extended resource mapping according to said first configuration comprises:
and according to the first configuration signaling, expanding resource mapping in a specified slot or symbol.
7. The method of claim 6,
the designated slot or symbol is preconfigured;
or the like, or, alternatively,
the designated slot or symbol is predefined;
or the like, or, alternatively,
the first configuration signaling comprises a third information field, and the third information field is used for indicating the specified slot or symbol.
8. A resource mapping method is applied to an access network device, and the method comprises the following steps:
sending a first configuration signaling to a first terminal, where the first configuration signaling includes a first information field, and the first information field is used to indicate that the first terminal expands resource mapping.
9. The method of claim 8,
the first information field is used to indicate the first terminal to extend the resource mapping in an extended mapping pattern.
10. The method of claim 9, further comprising:
and sending a configuration instruction to the first terminal, wherein the configuration instruction comprises an indication field for configuring the extended mapping style.
11. The method of claim 9,
the first information field indicates the extended mapping pattern;
or the like, or, alternatively,
the first configuration signaling further includes a second information field, where the second information field is used to indicate an extended mapping pattern.
12. The method of claim 9,
the extended mapping pattern is predefined.
13. The method according to any of claims 8 to 12, wherein the first terminal frequency division multiplexes a symbol occupied by a demodulation reference signal with the second terminal; the first terminal initially occupies a first resource element position within the symbol, and the second terminal initially occupies a second resource element position within the symbol;
the method further comprises the following steps:
and sending a second configuration signaling to the second terminal, wherein the second configuration signaling is used for indicating the second terminal to cancel resource mapping on the second resource element position.
14. The method according to any one of claims 8 to 12,
the first configuration signaling comprises a third information field, and the third information field is used for indicating a designated slot or a symbol corresponding to the extended resource mapping.
15. A resource mapping method applied to a second terminal, the method comprising:
receiving a second configuration signaling, where the second configuration signaling includes a fourth information field, and the fourth information field is used to instruct the second terminal to adjust the traffic channel resource mapping;
and adjusting resource mapping according to the second configuration signaling.
16. The method of claim 15, wherein the first terminal frequency division multiplexes symbols occupied by demodulation reference signals with the second terminal; the first terminal initially occupies a first resource element position within the symbol, and the second terminal initially occupies a second resource element position within the symbol;
the adjusting the resource mapping according to the second configuration signaling includes:
and canceling the resource mapping at the second resource element position according to the second configuration signaling.
17. The method according to claim 15 or 16, wherein said adjusting the resource mapping according to the second configuration signaling comprises:
and adjusting resource mapping in a specified slot or symbol according to the second configuration signaling.
18. The method of claim 17,
the designated slot or symbol is preconfigured;
or the like, or, alternatively,
the designated slot or symbol is predefined;
or the like, or, alternatively,
the second configuration signaling includes a fifth information field, where the fifth information field is used to indicate the slot or symbol of the designated slot.
19. An apparatus for resource mapping, applied to a first terminal, the apparatus comprising:
a receiving module, configured to receive a first configuration signaling, where the first configuration signaling includes a first information field, and the first information field is used to indicate that the first terminal expands a service channel resource mapping;
and the processing module is used for expanding resource mapping according to the first configuration signaling.
20. The apparatus of claim 19, wherein the processing module is further configured to perform extended resource mapping in an extended mapping pattern according to the first configuration signaling.
21. The apparatus of claim 20,
the first information field indicates the extended mapping pattern;
or the like, or, alternatively,
the first configuration signaling further includes a second information field, where the second information field is used to indicate the extended mapping pattern.
22. The apparatus of claim 20,
the extended mapping pattern is pre-configured;
or the like, or, alternatively,
the extended mapping pattern is predefined.
23. The apparatus according to any of claims 19 to 22, wherein the first terminal frequency division multiplexes a symbol occupied by a demodulation reference signal with the second terminal; the first terminal initially occupies a first resource element position within the symbol, and the second terminal initially occupies a second resource element position within the symbol;
the processing module is further configured to perform resource mapping at the first resource element location and the second resource element location according to the first configuration signaling.
24. The apparatus of any of claims 19 to 22, wherein the processing module is further configured to spread resource mapping within a specified slot or symbol according to the first configuration signaling.
25. The apparatus of claim 24,
the designated slot or symbol is preconfigured;
or the like, or, alternatively,
the designated slot or symbol is predefined;
or the like, or, alternatively,
the first configuration signaling comprises a third information field, and the third information field is used for indicating the specified slot or symbol.
26. An apparatus for resource mapping, applied to an access network device, the apparatus comprising:
a sending module, configured to send a first configuration signaling to a first terminal, where the first configuration signaling includes a first information field, and the first information field is used to indicate that the first terminal expands resource mapping.
27. The method of claim 26,
the first information field is used to indicate the first terminal to extend the resource mapping in an extended mapping pattern.
28. The apparatus of claim 27, wherein the sending module is further configured to send a configuration instruction to the first terminal, and the configuration instruction includes an indication field for configuring the extended mapping pattern.
29. The apparatus of claim 27,
the first information field indicates the extended mapping pattern;
or the like, or, alternatively,
the first configuration signaling further includes a second information field, where the second information field is used to indicate the extended mapping pattern.
30. The apparatus of claim 27,
the extended mapping pattern is predefined.
31. The apparatus according to any of the claims 26 to 30, wherein the first terminal frequency division multiplexes a symbol occupied by a demodulation reference signal with the second terminal; the first terminal initially occupies a first resource element position within the symbol, and the second terminal initially occupies a second resource element position within the symbol;
the sending module is further configured to send a second configuration signaling to the second terminal, where the second configuration signaling is used to instruct the second terminal to cancel resource mapping at the second resource element position.
32. The apparatus of any one of claims 26 to 30,
the first configuration signaling comprises a third information field, and the third information field is used for indicating a designated slot or a symbol corresponding to the extended resource mapping.
33. An apparatus for resource mapping, applied to a second terminal, the apparatus comprising:
a receiving module, configured to receive a second configuration signaling, where the second configuration signaling includes a fourth information field, and the fourth information field is used to instruct the second terminal to adjust a service channel resource mapping;
and the processing module is used for adjusting resource mapping according to the second configuration signaling.
34. The apparatus of claim 33, wherein a first terminal frequency division multiplexes a symbol occupied by a demodulation reference signal with the second terminal; the first terminal initially occupies a first resource element position within the symbol, and the second terminal initially occupies a second resource element position within the symbol;
the processing module is further configured to cancel resource mapping at the second resource element position according to the second configuration signaling.
35. The apparatus of claim 33 or 34, wherein the processing module is further configured to adjust resource mapping within a specified slot or symbol according to the second configuration signaling.
36. The apparatus of claim 35,
the designated slot or symbol is preconfigured;
or the like, or, alternatively,
the designated slot or symbol is predefined;
or the like, or, alternatively,
the second configuration signaling includes a fifth information field, where the fifth information field is used to indicate the slot or symbol of the designated slot.
37. A terminal, characterized in that the terminal comprises:
a processor;
a transceiver coupled to the processor;
a memory for storing executable signaling for the processor;
wherein the processor is configured to load and execute executable instructions to implement the resource mapping method of any of claims 1 to 18.
38. A computer readable storage medium having stored therein at least one instruction, at least one program, a set of codes, or a set of instructions, which is loaded and executed by a processor to implement the resource mapping method as claimed in any one of claims 1 to 18.
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| PCT/CN2020/116297 WO2022056866A1 (en) | 2020-09-18 | 2020-09-18 | Resource mapping method and apparatus, device, and readable storage medium |
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